397906341

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{997259}}^1$

素因数の和:997288

約数の個数: 16

約数和(自身を含む): 638246400

約数和(自身を除く): 240340059

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 997259, 2991777, 6980813, 18947921, 20942439, 56843763, 132635447, 397906341]

約数ペア:

[(1, 397906341), (3, 132635447), (7, 56843763), (19, 20942439), (21, 18947921), (57, 6980813), (133, 2991777), (399, 997259)]